Distal Catheter Tip Formation
AssigneeVolcano Corporation
InventorsJeremy Stigall, Christopher LeBlanc
Life of this patent
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Abstract
The present disclosure provides various embodiments of methods of forming a tapering distal tip for a catheter. An exemplary method includes providing a mandrel and a holding hypotube, placing a tip first material with a first outer diameter over the mandrel and the hypotube, placing a tip second material with a second outer diameter over the mandrel and under the first material, placing a shrink tube of heat-shrink material around at least a junction of the first material and second material, heating the shrink tube, cooling the first material and second material, and removing the shrink tube and the hypotube. The first outer diameter is greater than the second outer diameter.
Claims21
A method of forming a tapering distal tip for a catheter, comprising:
- providing a mandrel and a holding hypotube;
- placing a tip first material with a first outer diameter over the mandrel and the hypotube;
- placing a tip second material with a second outer diameter over the mandrel and under the first material, the first outer diameter being greater than the second outer diameter;
- placing a shrink tube of heat-shrink material around at least a junction of the first material and second material;
- heating the shrink tube;
- cooling the first material and second material;
- and
- removing the shrink tube and the hypotube.
A method of forming a tapering distal tip for a catheter, comprising:
- providing a mandrel and a holding hypotube;
- placing a first polyether block amide having a first Shore D durometer hardness over the mandrel and the hypotube;
- placing a second polyether block amide having a second Shore D durometer hardness that is greater than the first Shore D durometer hardness over the mandrel and under the first polyether block amide;
- placing a shrink tube of heat-shrink material around at least a junction of the first polyether block amide and the second polyether block amide;
- centering the shrink tube, first material, and second material between two heating dies configured to form a circle around the shrink tube, first material, and second material;
- cooling the first polyether block amide and the second polyether block amide;
- and
- removing the shrink tube and hypotube.
A method of forming a tapering distal tip for a catheter, comprising:
- providing a mandrel and a holding hypotube, the hypotube comprising a distal leg and a distal back;
- placing a tip first material with a first outer diameter over the mandrel and the distal leg;
- placing a tip second material with a second outer diameter over the mandrel and under the first material so that the second material abuts the distal leg, the first outer diameter being greater than the second outer diameter;
- placing a shrink tube of heat-shrink material around at least a junction of the first material and second material;
- heating the shrink tube;
- cooling the first material and second material;
- and
- removing the shrink tube and the hypotube.
Dependencies are inferred from the claim text.